how to create macos big sur bootable usb install drive

    By: Manu
    2 years ago
    Category: MacOSViews: 27

    Advanced users going to look for a way to make a bootable usb of macOS Big Sur. As Big Sur is released . You should have a USB stick with capacity 16gb or more. But at least 16gb required. Now once you have a Bootable usb ready you can install it on multiple Macs without downloading again and again.



    Things to check before proceed



    1.    USB Flash drive should be at least 16gb in size
    2.    USB Flash drive data will be erased so back it up if you have any useful content in there
    3.    You should have "Install macOS Big Sur.app" present in your application folder, if not download it from app store.
    4.    Your MacBook is compatible (Check here)


    •    MacBook Pro (Late 2013 and newer)
    •    MacBook Air (2013 and newer)
    •    MacBook (2015 and newer)
    •    iMac (2014 and newer)
    •    iMac Pro (2017 and newer)
    •    Mac Pro (2013 and newer)
    •    Mac Mini (2014 and newer)



    Let's create bootable drive



       Connect USB Flash drive to macwhere you have Big Sur.app downloaded.

       Open terminal (Hit cmd+spacebar together and type terminal) then hit return you should have terminal up.

       Enter below given command


    sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/USB_FLASH_DRIVE_NAME --nointeraction



    Replace "USB_FLASH_DRIVE_NAME" with the name of USB drive. You can check it in finder.


    Here is an example

    Here we have USB name as "macOS".


    And also BigSur.app in applications folder check here

    Thats it if all goes well you should have your bootable usb. Wait till command completes to 100%.